hello,i m matlab newbie here. i wanted to ask how to convert vector into 2D array?Now i have an ECG signal in mat.file called MIT100, here's my code:

load MIT100
data=MIT100(1:65536);
plot(data)

then, a one dimensional image will appear, how to convert the (1:65536) into a 256x256 image because i need 256x256 image format to do image compression. Thanks.